Arduino-Labview-based Oscilloscope

[erikovsky]

Hi guys,

Came out an idea. I was searching for a DIY A/DC spectrum analyzer or Oscilloscope, better using arduino with external A/D chip.

And I got some words really fresh to me, like DAQ.
My original thoughts was using a AK5397 as A/D and put the data into PC, then analyze them. However, I am not an EE. After reading AKM'S ADC datasheet, lots of questions rose in my mind.

I don't know what's next after we convert A to D, and how to sen them to PC.After tremendous searching, I saw DAQ and Labview. To me, Labview seems to be the best choice, due to it's flexibility and powerful function, a DIY oscilloscope seems likely to be done in this way. Then I think maybe we can use the inexpensive arduino as DAQ rather than some DAQ cards (>80USD).

I found a paper of Princeton. Happy to see that. Exactly what I am thinking!

My goal:
*External (interchangeable) ADC module
*Analogue interface motherboard
*Better-than-audio-grade performance with C/P reasonable
*compatible to already-existed PC-based softwares

So, any comment?

 

[alayn91]

Hello,
Try Raspberry Pi.
Oh, it's already done

- Open Source Measurement and Control Tool Replaces Expensive Lab Instruments - Electronic Products

 

[Frex]

Hello erikovsky,

Your idea is good, but LabView is a very expensive software.
IMHO absolutely not DIY friendly.
Maybe you could look the Digilent AnalogDiscovery that is very very good value for
money hardware+software solution to make a spectrum analyser/scope with PC.
Regards.

Frex

 

[erikovsky]

Hello erikovsky,

Your idea is good, but LabView is a very expensive software.
IMHO absolutely not DIY friendly.
Maybe you could look the Digilent AnalogDiscovery that is very very good value for
money hardware+software solution to make a spectrum analyser/scope with PC.
Regards.

Frex

Hi Frex,

A modified idea: DIY analoge-to-digital interface (OPAmp-ADC), and connect this module to Rasperry then to PC. We can use some already-existed open-source spectrum analyzer/oscilloscope.
I just got some AD7621ASTZ for ADI, so I wanna do a typical circuit suggested by DS.

Is these ideas possible to make a PC-DSO?

 

[dudaindc]

...
Your idea is good, but LabView is a very expensive software.
...

Frex,

There is a student version of LabView that is really inexpensive.

My experience about it being unfriendly is quite the opposite - LabView is really intuitive to use. But that is just an opinion.

Cheers!

 

[erikovsky]

Update

Hi All,

After tremendous searching I found some designs.

My goal:
*External (interchangeable) ADC module
*Analogue interface motherboard
*Better-than-audio-grade performance with C/P reasonable
*compatible to already-existed PC-based softwares

PiScope
External ADC
Raspberry Pi as MCU
Only portable software (is it compatible to PC software?)

BitScope
Non-interchangeable ADC module
Raspberry Pi as MCU
Well-developed open-source PC software!
Not very DIY-compatible (layout and searching components)

DPScope II
All-in one DAQ
No R-pi nor Arduino
Free specific PC software
Open schematic

Red Pitaya
Non-interchangeable ADC module
High quality boards
All-in one DAQ
PC or smartphone with a touch screen software
expensive

 

[icpart]

I have Analog Discovery 2 and it is very good peace of hardware and softeate for that money. Also PC software is very flexible and with great options also for custom scripts and programming. Also there is SDK for own software. Red Pitaya is good on paper and specification but with very limited Apps and also they are web based crap of software. Just watch review for Red Pitaya on Youtube from Dave Jones (EEVBlog channel).